CompTIA

Network+ prep

For junior network administrators and support technicians who need to prove they can design, run, secure and troubleshoot wired and wireless networks.

Start free Unlock everything · $29

The real exam

Exam code	N10-009
Questions	Up to 90 (multiple choice and performance-based)
Time	90 minutes
Pass mark	720 on a 100 to 900 scale
Fee	$399 (US list price)
Format	Pearson VUE test centre or online proctored
Navigation	Flag for review, go back to any question
Prerequisites	None required; A+ and 9 to 12 months of networking experience recommended
Validity	3 years, renew with CEUs or a newer exam

What you get

lessons

hours of reading

170

original questions

full mock exams

Mocks follow the real rules: 90 questions in 90 minutes, flag and review.

Syllabus

Networking concepts23%

OSI model, appliances, cloud, ports and protocols, media, topologies, IPv4 and IPv6 addressing, modern use cases.

Network implementation20%

Routing, switching, VLANs, wireless configuration and physical installation.

Network operations19%

Documentation, monitoring, disaster recovery, DHCP, DNS, time and remote management.

Network security14%

Security concepts, IAM, attacks and the defences and hardening that stop them.

Network troubleshooting24%

The troubleshooting method, cabling, services, performance and the tools to diagnose them.

Course outline

Networking foundations · 5 lessons
Media and addressing · 5 lessons
Cloud and modern networking · 2 lessons
Routing and switching · 4 lessons
Wireless and physical installation · 3 lessons
Network operations · 7 lessons
Network security · 4 lessons
Network troubleshooting · 7 lessons

Try a question

A user can ping a web server by IP address, but the browser times out when loading the site on port 443. Using a bottom-up approach, the technician has confirmed Layers 1 to 3 are working. Which layer should the technician examine NEXT?

A. Data link

B. Session

C. Transport

D. Physical

Show answer

Answer: C. A successful ping confirms Layers 1 to 3. When a specific service fails, the next suspect is Layer 4: a firewall rule blocking TCP 443 or a service not listening on that port. Bottom up means checking each layer in turn.

A company wants a device that inspects traffic inline and automatically drops packets matching known attack signatures before they reach the server farm. Which device BEST meets this requirement?

A. Intrusion detection system

B. Intrusion prevention system

C. Layer 7 load balancer

D. Caching forward proxy server

Show answer

Answer: B. The key words are inline and automatically drops. That describes an IPS. An IDS only detects and alerts, normally from a span port or tap.

Passwell is not affiliated with or endorsed by CompTIA. CompTIA and Network+ are trademarks of CompTIA, Inc. All questions are original practice material. Facts checked 2026-11-14.